Skip links

Diesel Vehicle Engine Oils

Caltex Delo® Gold Ultra 15W-40

Introduced in 1935, Delo® was the first successful commercially available detergent-type diesel engine oil based on “ISOSYN” technology.

Available in

1 Ltr
3 Ltr
5 Ltr
6 Ltr
20 Ltr
210 Ltr
  • Minimized operating costs
    Exceptional soot dispersancy and wear control. Cylinders, pistons, rings, and injectors are well protected against wear and corrosion, providing optimum service life and minimal maintenance. Contributes to maximum vehicle utilization and minimal downtime.
  • Excellent emission control system life
    Provides optimum Diesel Particulate Filter (DPF) life for minimal downtime and cleaning, thus managing your maintenance costs.
  • Managed inventory costs
    Backward compatible with previous API Oil Service Categories and engine models. Suitable for use in four-stroke gasoline and naturally aspirated, turbocharged and modern electronically controlled / low emission diesel engines calling for an SAE 15W-40 heavy duty motor oil.
Caltex Delo® has a long history of proven performance that has firmly established the Delo brand name worldwide as the symbol of reliability and unsurpassed performance for all types of diesel engines.

Delo® engine with ISOSYN® Technology, combines premium base oils with high performance additives in a way that provides diesel parts protection that rivals synthetic performance. Delo engine oils with ISOSYN® Technology help provide extended service protection, maximize engine durability and minimize operating costs. Delo is more than just a premium line of engine oils. From transmissions to differentials, from wheel bearings to shackle pins, we’ve got your equipment covered.

  • API CI-4, CH-4 / SL (Licensed), • ACEA E7
  • Cummins CES 20078, 77, 76 • Daimler MB-Approval 228.3
  • Detroit Diesel 93K215, • Mack EO-N,
  • MTU Category 2, • Renault RLD-2, • Volvo VDS-3

    Meets the Requirements of

  • API CF-4, CF, CD, • ACEA E5-02
  • Caterpillar ECF-1-a • Cummins CES 20072, 20071
  • Deutz DQC-III-10, • MAN M 3275-1
  • Mack EO-M Plus, • JASO DH-1, • Global DHD-1

Purchase at your nearest Caltex outlet